/Engine/Source/Runtime/Sockets/Public/NetworkMessage.h
Message commands, these correspond to the operations of the low level file system.
namespace NFS_Messages { enum Type { SyncFile, DeleteFile, MoveFile, SetReadOnly, OpenRead, OpenWrite, OpenAppend, CreateDirectory, DeleteDirectory, IterateDirectory, IterateDirectoryRecursively, DeleteDirectoryRecursively, CopyFile, GetFileInfo, Read, Write, Close, Seek, SetTimeStamp, ToAbsolutePathForRead, ToAbsolutePathForWrite, ReportLocalFiles, GetFileList, Heartbeat, RecompileShaders, } }